Part Type: Engine Cooling Fan Clutch. 1988 Ford F-150 Engine: 5.8L V8; Reverse Rotation; Optional Duty Thermal Fan Clutch;. Fan Clutch. Reverse Rotation Severe Duty Thermal Fan Clutch. 1989 Ford F-150 Engine: 5.8L V8; Reverse Rotation; Optional Duty Thermal Fan Clutch;.